I would like to show you guys what the North block will look like using the metal block (black) vs a copper one. I ran 1 loop for about 3 months using the following parts. Distilled water, Swiftech Hydrx coolant, Pentosin antifreeze (G001100) I am hopping Foxconn did not skimp with the new X58 board BloodRage North Block? The sad thing is I was given a NEW all Copper block for a replacement, but I was to lazy on switching them.